fire

Will all kinds of Quartz emit sparks when they are hit with steel? What about quartz/quartzite that have rounded surfaces all over like the one shown in the picture? I learned that quartz do gives off sparks when hit by steel. But this one shown in picture do not sparks.

As a storm approached yesterday my dad and I took a drive to look for left over excess (thrown away) insulation at a nearby construction site. All photos were taken yesterday after noon v (except the last one) On the way back home I thought about visiting the apartment where the fire...

Traveling to the Cabin at Lake Madrone in Berry Creek California during the Bear fire.